Cigarette

ABSTRACT

A cigarette includes a tobacco rod and a filter rod connected to a downstream end portion of the tobacco rod. A portion of the filter rod includes a cooling portion, and the cooling portion includes sucrose as a cooling material.

TECHNICAL FIELD

The present disclosure provides a cigarette including a tobacco rod anda filter rod.

BACKGROUND ART

Recently, the demand for alternative methods to overcome theshortcomings of general cigarettes has increased. For example, there isan increasing demand for a method of generating aerosol by heating anaerosol generating material in cigarettes, rather than by burningcigarettes.

A cigarette includes a filter, and the filter is configured to filter acertain component included in an aerosol or cool the aerosol. When thefiltering performance of the filter is too high, the amount of aerosoltransfer decreases, and when the filtering performance of the filter istoo low, certain components included in the aerosol are not filtered.

Accordingly, research is being conducted on a filter having appropriateperformance by changing components constituting the filter or bychanging the structure of the filter.

DESCRIPTION OF EMBODIMENTS Technical Problem

Provided is a cigarette using sucrose as a cooling material configuringa cooling portion. The technical problems of the present disclosure arenot limited to the above-described description, and other technicalproblems may be derived from the embodiments to be describedhereinafter.

Technical Solution to Problem

According to an aspect of the present disclosure, a cigarette includes atobacco rod and a filter rod connected to a downstream end portion ofthe tobacco rod.

A portion of the filter rod according to the present embodiment includesa cooling portion, and the cooling portion includes sucrose as a coolingmaterial.

Advantageous Effects of Disclosure

According to the present disclosure, a heated aerosol may be effectivelycooled by using sucrose as a cooling material configuring a coolingportion of a cigarette. As the heated aerosol passes through the coolingportion, the temperature of the sucrose reaches the melting pointthereof or higher, and phase change of sucrose occurs. In thisoperation, sucrose may absorb the surrounding heat, thereby cooling theheated aerosol.

In addition, since sucrose has the characteristic of absorbing thesurrounding moisture, an amount of aerosol may be increased by addingmoisture absorbed by the sucrose to the aerosol passing through thecooling portion.

BRIEF DESCRIPTION OF DRAWINGS

FIGS. 1 through 3 are diagrams showing examples in which a cigarette isinserted into an aerosol generating device;

FIG. 4 illustrates an example of a cigarette;

FIG. 5 illustrates an example of a cigarette including a cooling portionaccording to an embodiment;

FIG. 6 is an example diagram illustrating a bead-form cooling materialaccording to an embodiment;

FIGS. 7A and 7B are example diagrams illustrating a sheet-form coolingmaterial according to an embodiment;

FIGS. 8A and 8B are example diagrams illustrating a block-form coolingmaterial according to an embodiment; and

FIG. 9 is a diagram explaining a cooling effect of using sucrose as acooling material according to an embodiment.

BEST MODE

According to a first aspect of the present disclosure, provided is acigarette including a tobacco rod and a filter rod connected to adownstream end portion of the tobacco rod, wherein a portion of thefilter rod includes a cooling portion, and the cooling portion includessucrose as a cooling material.

MODE OF DISCLOSURE

With respect to the terms used to describe the various embodiments,general terms which are currently and widely used are selected inconsideration of functions of structural elements in the variousembodiments of the present disclosure. However, meanings of the termscan be changed according to intention, a judicial precedence, theappearance of new technology, and the like. In addition, in certaincases, a term which is not commonly used can be selected. In such acase, the meaning of the term will be described in detail at thecorresponding portion in the description of the present disclosure.Therefore, the terms used in the various embodiments of the presentdisclosure should be defined based on the meanings of the terms and thedescriptions provided herein.

In addition, unless explicitly described to the contrary, the word“comprise” and variations such as “comprises” or “comprising” will beunderstood to imply the inclusion of stated elements but not theexclusion of any other elements. In addition, the terms “-er”, “-or”,and “module” described in the specification mean units for processing atleast one function and operation and can be implemented by hardwarecomponents or software components and combinations thereof.

Hereinafter, the present disclosure will now be described more fullywith reference to the accompanying drawings, in which exemplaryembodiments of the present disclosure are shown such that one ofordinary skill in the art may easily work the present disclosure. Thedisclosure may, however, be embodied in many different forms and shouldnot be construed as being limited to the embodiments set forth herein.

In the following embodiments, the terms “upstream” and “downstream” areterms used to indicate the relative position between segmentsconfiguring a cigarette. When a user inhales air by using a cigarette,the portion from which air from the outside flows to the inside of thecigarette is “upstream”, and the portion from which air from the insideof the cigarette flows to the outside is “downstream”. The user may bitethe downstream end portion of the cigarette when using the cigarette.The term “end portion” may also be described as “end”.

Hereinafter, embodiments of the present disclosure will be described indetail with reference to the drawings.

FIGS. 1 through 3 are diagrams showing examples in which a cigarette isinserted into an aerosol generating device.

Referring to FIG. 1, the aerosol generating device 10000 may include abattery 11000, a controller 12000, and a heater 13000. Referring toFIGS. 2 and 3, the aerosol generating device 10000 may further include avaporizer 14000. Also, a cigarette 20000 may be inserted into an innerspace of the aerosol generating device 10000.

FIGS. 1 through 3 illustrate components of the aerosol generating device10000, which are related to the present embodiment. Therefore, it willbe understood by one of ordinary skill in the art related to the presentembodiment that other general-purpose components may be further includedin the aerosol generating device 10000, in addition to the componentsillustrated in FIGS. 1 through 3.

Also, FIGS. 2 and 3 illustrate that the aerosol generating device 10000includes the heater 13000. However, according to necessity, the heater13000 may be omitted.

FIG. 1 illustrates that the battery 11000, the controller 12000, and theheater 130000 are arranged in series. Also, FIG. 2 illustrates that thebattery 11000, the controller 12000, the vaporizer 14000, and the heater13000 are arranged in series. Also, FIG. 3 illustrates that thevaporizer 14000 and the heater 13000 are arranged in parallel. However,the internal structure of the aerosol generating device 10000 is notlimited to the structures illustrated in FIGS. 1 through 3. In otherwords, according to the design of the aerosol generating device 10000,the battery 11000, the controller 12000, the heater 13000, and thevaporizer 14000 may be differently arranged.

When the cigarette 20000 is inserted into the aerosol generating device10000, the aerosol generating device 10000 may operate the heater 13000and/or the vaporizer 14000 to generate an aerosol from the cigarette20000 and/or the vaporizer 14000. The aerosol generated by the heater13000 and/or the vaporizer 14000 is delivered to a user by passingthrough the cigarette 20000.

According to necessity, even when the cigarette 20000 is not insertedinto the aerosol generating device 10000, the aerosol generating device10000 may heat the heater 13000.

The battery 11000 supplies electric power to be used for the aerosolgenerating device 10000 to operate. For example, the battery 11000 maysupply power to heat the heater 13000 or the vaporizer 14000, and maysupply power for operating the controller 12000. Also, the battery 11000may supply power for operations of a display, a sensor, a motor, etc.mounted in the aerosol generating device 10000.

The controller 12000 may generally control operations of the aerosolgenerating device 10000. In detail, the controller 12000 may control notonly operations of the battery 11000, the heater 13000, and thevaporizer 14000, but also operations of other components included in theaerosol generating device 10000. Also, the controller 12000 may check astate of each of the components of the aerosol generating device 10000to determine whether or not the aerosol generating device 10000 is ableto operate.

The controller 12000 may include at least one processor. A processor maybe implemented as an array of a plurality of logic gates or may beimplemented as a combination of a general-purpose microprocessor and amemory in which a program executable in the microprocessor is stored. Itwill be understood by one of ordinary skill in the art that theprocessor can be implemented in other forms of hardware.

The heater 13000 may be heated by the power supplied from the battery11000. For example, when the cigarette 20000 is inserted into theaerosol generating device 10000, the heater 13000 may be located insidethe cigarette 20000. Thus, the heated heater 13000 may increase atemperature of an aerosol generating material in the cigarette 20000.

The heater 13000 may include an electro-resistive heater. For example,the heater 13000 may include an electrically conductive track, and theheater 13000 may be heated when currents flow through the electricallyconductive track. However, the heater 13000 is not limited to theexample described above and may include all heaters which may be heatedto a desired temperature. Here, the desired temperature may be pre-setin the aerosol generating device 10000 or may be set as a temperaturedesired by a user.

As another example, the heater 13000 may include an induction heater. Indetail, the heater 13000 may include an electrically conductive coilconfigured to heat a cigarette in an induction heating method, and thecigarette may include a susceptor which may be heated by the inductionheater.

For example, the heater 13000 may include a tube-type heating element, aplate-type heating element, a needle-type heating element, or a rod-typeheating element, and may heat the inside or the outside of the cigarette20000, according to the shape of the heating element.

Also, the aerosol generating device 10000 may include a plurality ofheaters 13000. Here, the plurality of heaters 13000 may be inserted intothe cigarette 20000 or may be arranged outside the cigarette 20000. Inaddition, some of the plurality of heaters 13000 may be inserted intothe cigarette 20000, and the others may be arranged outside thecigarette 20000. In addition, the shape of the heater 13000 is notlimited to the shapes illustrated in FIGS. 1 through 3 and may includevarious shapes.

The vaporizer 14000 may generate an aerosol by heating a liquidcomposition and the generated aerosol may pass through the cigarette20000 to be delivered to a user. In other words, the aerosol generatedvia the vaporizer 14000 may move along an air flow passage of theaerosol generating device 10000 and the air flow passage may beconfigured such that the aerosol generated via the vaporizer 14000passes through the cigarette 20000 to be delivered to the user.

For example, the vaporizer 14000 may include a liquid storage, a liquiddelivery element, and a heating element, but it is not limited thereto.For example, the liquid storage, the liquid delivery element, and theheating element may be included in the aerosol generating device 10000as independent modules.

The liquid storage may store a liquid composition. For example, theliquid composition may be a liquid including a tobacco-containingmaterial having a volatile tobacco flavor component, or a liquidincluding a non-tobacco material. The liquid storage may be formed to beattached/detached to/from the vaporizer 14000 or may be formedintegrally with the vaporizer 14000.

For example, the liquid composition may include water, a solvent,ethanol, plant extract, spices, flavorings, or a vitamin mixture. Thespices may include menthol, peppermint, spearmint oil, and variousfruit-flavored ingredients, but are not limited thereto. The flavoringsmay include ingredients capable of providing various flavors or tastesto a user. Vitamin mixtures may be a mixture of at least one of vitaminA, vitamin B, vitamin C, and vitamin E, but are not limited thereto.Also, the liquid composition may include an aerosol forming substance,such as glycerin and propylene glycol.

The liquid delivery element may deliver the liquid composition of theliquid storage to the heating element. For example, the liquid deliveryelement may be a wick such as cotton fiber, ceramic fiber, glass fiber,or porous ceramic, but is not limited thereto.

The heating element is an element configured to heat the liquidcomposition delivered by the liquid delivery element. For example, theheating element may be a metal heating wire, a metal hot plate, aceramic heater, or the like, but is not limited thereto. In addition,the heating element may include a conductive filament such as nichromewire and may be positioned as being wound around the liquid deliveryelement. The heating element may be heated by a current supply and maytransfer heat to the liquid composition in contact with the heatingelement, thereby heating the liquid composition. As a result, aerosolmay be generated.

For example, the vaporizer 14000 may be referred to as a cartomizer oran atomizer, but it is not limited thereto.

The aerosol generating device 10000 may further include general-purposecomponents in addition to the battery 11000, the controller 12000, theheater 13000, and the vaporizer 14000. For example, the aerosolgenerating device 10000 may include a display capable of outputtingvisual information and/or a motor configured to output hapticinformation. Also, the aerosol generating device 10000 may include atleast one sensor (a puff detecting sensor, a temperature detectingsensor, a cigarette insertion detecting sensor, etc.). Also, the aerosolgenerating device 10000 may be formed as a structure where, even whenthe cigarette 20000 is inserted into the aerosol generating device10000, external air may be introduced or internal air may be discharged.

Although not illustrated in FIGS. 1 through 3, the aerosol generatingdevice 10000 and an additional cradle may form together a system. Forexample, the cradle may be used to charge the battery 11000 of theaerosol generating device 10000. Alternatively, the heater 13000 may beheated when the cradle and the aerosol generating device 10000 arecoupled to each other.

The cigarette 20000 may be similar as a general combustive cigarette.For example, the cigarette 20000 may be divided into a first portionincluding an aerosol generating material and a second portion includinga filter, etc. Alternatively, the second portion of the cigarette 20000may also include an aerosol generating material. For example, an aerosolgenerating material made in the form of granules or capsules may beinserted into the second portion.

The entire first portion may be inserted into the aerosol generatingdevice 10000, and the second portion may be exposed to the outside.Alternatively, only a portion of the first portion may be inserted intothe aerosol generating device 10000, or the entire first portion and aportion of the second portion may be inserted into the aerosolgenerating device 10000. The user may puff aerosol while holding thesecond portion by the mouth of the user. In this case, the aerosol isgenerated by the external air passing through the first portion, and thegenerated aerosol passes through the second portion and is delivered tothe user's mouth.

For example, the external air may flow into at least one air passageformed in the aerosol generating device 10000. For example, the openingand closing and/or a size of the air passage formed in the aerosolgenerating device 10000 may be adjusted by the user. Accordingly, theamount of smoke and a smoking impression may be adjusted by the user. Asanother example, the external air may flow into the cigarette 20000through at least one hole formed in a surface of the cigarette 20000.

Hereinafter, an example of the cigarette 20000 will be described withreference to FIG. 4.

FIG. 4 illustrates an example of a cigarette.

Referring to FIG. 4, the cigarette 20000 may include a tobacco rod 21000and a filter rod 22000. The first portion described above with referenceto FIGS. 1 through 3 may include the tobacco rod 21000, and the secondportion 32000 may include the filter rod 22000.

FIG. 4 illustrates that the filter rod 22000 includes a single segment.However, the filter rod 22000 is not limited thereto. In other words,the filter rod 22000 may include a plurality of segments. For example,the filter rod 22000 may include a first segment configured to cool anaerosol and a second segment configured to filter a certain componentincluded in the aerosol. Also, according to necessity, the filter rod22000 may further include at least one segment configured to performother functions.

The cigarette 2000 may be packaged via at least one wrapper 24000. Thewrapper 24000 may have at least one hole through which external air maybe introduced or internal air may be discharged. For example, thecigarette 20000 may be packaged via one wrapper 24000. As anotherexample, the cigarette 20000 may be doubly packaged via at least twowrappers 24000. For example, the tobacco rod 21000 may be packaged via afirst wrapper, and the filter rod 22000 may be packaged via a secondwrapper. Also, the tobacco rod 21000 and the filter rod 22000, which arerespectively packaged via separate wrappers, may be coupled to eachother, and the entire cigarette 20000 may be packaged via a thirdwrapper. When each of the tobacco rod 21000 and the filter rod 22000includes a plurality of segments, each segment may be packaged via aseparate wrapper. Also, the entire cigarette 20000 including theplurality of segments, which are respectively packaged via the separatewrappers and which are coupled to each other, may be re-packaged viaanother wrapper.

The tobacco rod 21000 may include an aerosol generating material. Forexample, the aerosol generating material may include at least one ofglycerin, propylene glycol, ethylene glycol, dipropylene glycol,diethylene glycol, triethylene glycol, tetraethylene glycol, and oleylalcohol, but it is not limited thereto. Also, the tobacco rod 21000 mayinclude other additives, such as flavors, a wetting agent, and/ororganic acid. Also, the tobacco rod 21000 may include a flavored liquid,such as menthol or a moisturizer, which is injected to the tobacco rod21000.

The tobacco rod 21000 may be manufactured in various forms. For example,the tobacco rod 21000 may be formed as a sheet or a strand. Also, thetobacco rod 21000 may be formed as a pipe tobacco, which is formed oftiny bits cut from a tobacco sheet. Also, the tobacco rod 21000 may besurrounded by a heat conductive material. For example, theheat-conducting material may be, but is not limited to, a metal foilsuch as aluminum foil. For example, the heat conductive materialsurrounding the tobacco rod 21000 may uniformly distribute heattransmitted to the tobacco rod 21000, and thus, the heat conductivityapplied to the tobacco rod may be increased and taste of the tobacco maybe improved. Also, the heat conductive material surrounding the tobaccorod 21000 may function as a susceptor heated by the induction heater.Here, although not illustrated in the drawings, the tobacco rod 21000may further include an additional susceptor, in addition to the heatconductive material surrounding the tobacco rod 21000.

The filter rod 22000 may include a cellulose acetate filter. Shapes ofthe filter rod 22000 are not limited. For example, the filter rod 22000may include a cylinder-type rod or a tube-type rod having a hollowinside. Also, the filter rod 22000 may include a recess-type rod. Whenthe filter rod 22000 includes a plurality of segments, at least one ofthe plurality of segments may have a different shape.

The filter rod 22000 may be formed to generate flavors. For example, aflavoring liquid may be injected onto the filter rod 22000, or anadditional fiber coated with a flavoring liquid may be inserted into thefilter rod 22000.

Also, the filter rod 22000 may include at least one capsule 23000. Here,the capsule 23000 may generate a flavor or an aerosol. For example, thecapsule 23000 may have a configuration in which a content containing aflavoring material is wrapped with a film. For example, the capsule23000 may have a spherical or cylindrical shape, but is not limitedthereto.

When the filter rod 22000 includes a segment configured to cool theaerosol, the cooling segment may include a polymer material or abiodegradable polymer material. For example, the cooling segment mayinclude pure polylactic acid alone, but the material for forming thecooling segment is not limited thereto. In some embodiments, the coolingsegment may include a cellulose acetate filter having a plurality ofholes. However, the cooling segment is not limited to theabove-described example and is not limited as long as the coolingsegment cools the aerosol.

Although not illustrated in FIG. 4, the cigarette 20000 according to anembodiment may further include a front-end filter. The front-end filtermay be located on a side of the tobacco rod 21000, the side facing thefilter rod 22000. The front-end filter may prevent the tobacco rod 21000from being detached outwards and prevent a liquefied aerosol fromflowing into the aerosol generating device 10000 (FIGS. 1 through 3)from the tobacco rod 21000, during smoking.

FIG. 5 illustrates an example of a cigarette including a cooling portionaccording to an embodiment.

Referring to FIG. 5, a cigarette 5 includes a tobacco rod 510 and afilter rod 520 connected to a downstream end portion of the tobacco rod510. The filter rod 520 may include a cooling portion 521, a tubeportion 522, and an acetate portion 523.

As shown in FIG. 5, in an embodiment, the cooling portion 521 may beconnected to the downstream end portion of the tobacco rod 510, thetobacco rod 510 may be connected to a downstream end portion of thecooling portion 521, and the acetate portion 523 may be connected to adownstream end portion of the tube portion 522. That is, segments may belocated in an order of the tobacco rod 510, the cooling portion 521, thetube portion 522, and the acetate portion 523.

In another embodiment, the tube portion 522 may be connected to thedownstream end portion of the tobacco rod 510, the cooling portion 521may be connected to the downstream end portion of the tube portion 522,and the acetate portion 523 may be connected to the downstream endportion of the cooling portion 521. In other words, segments may belocated in an order of the tobacco rod 510, the tube portion 522, thecooling portion 521, and the acetate portion 523.

However, types of filter segments included in the filter rod 520 andarrangement order of filter segments configuring the filter rod 520 arenot limited thereto.

The cigarette 5 may be packaged via a plurality of wrappers. Theplurality of wrappers may be formed as a general wrapper, and may be aporous wrapper or a non-porous wrapper.

For example, the tobacco rod 510 may be packaged via a first wrapper,and the tube portion 522 may be packaged via a second wrapper. Inaddition, the cooling portion 521 may be packaged via a third wrapper,and the acetate portion 523 may be packaged via a fourth wrapper.

A fifth wrapper may be wrapped around outer sides of the first wrapper,the second wrapper, and the third wrapper. In other words, the tobaccorod 510, the tube portion 522, and the cooling portion 521 of thecigarette 5 may be further packaged via the fifth wrapper. In addition,a sixth wrapper may be wrapped around at least a portion of the fifthwrapper and an outer side of the fourth wrapper. That is, at least aportion of the cooling portion 521 of the cigarette 5 and the acetateportion 523 may be further packaged via the sixth wrapper.

The diameter of the cigarette 5 may be within a range of 5 mm to 9 mm,and the length of the cigarette 5 may be about 48 mm, but are notlimited thereto. For example, the length of the tobacco rod 510 may beabout 12 mm, the length of the tube portion 522 may be about 10 mm, thelength of the cooling potion 521 may be about 14 mm, and the length ofthe acetate portion 523 may be about 12 mm, but are not limited thereto.

The tobacco rod 510 includes an aerosol generating material. Forexample, the aerosol generating material may include at least one ofglycerin, propylene glycol, ethylene glycol, dipropylene glycol,diethylene glycol, triethylene glycol, tetraethylene glycol, and oleylalcohol.

In addition, the tobacco rod 510 may include other additives, such asflavors, a wetting agent, and/or organic acid. For example, flavors mayinclude licorice, saccharose, fructose syrup, isosweet, cocoa, lavender,cinnamon, carudamon, celery, fenugreek, cascarilla, white sandalwood,monarda didyma, geranium, honey essence, rose oil, vanilla, lemon oil,orange oil, mint oil, cinnamon, caraway, cognac, jasmine, chamomile,methol, cinnamon, ylang-ylang, salvia, spearmint, ginger, coriander,coffee, or the like. In addition, the wetting agent may includeglycerin, propylene glycol, or the like.

For example, the tobacco rod 510 may be filled with a reconstituenttobacco sheet. As another example, the tobacco rod 510 may be filledwith tiny bits. Herein, the tiny bits may be generated by finely cuttingthe reconstituent tobacco sheet. As another example, the tobacco rod 510may be filled with a plurality of tobacco strands in which theconsistuent tobacco sheet is finely cut. For example, the tobacco rod510 may be formed by combining the plurality of tobacco strands in thesame direction (parallel) or randomly.

In addition, before an operation in which the tobacco rod 510 ispackaged via a wrapper, a flavored liquid, such as menthol or amoisturizer, may be injected to the center of the tobacco rod 510.

The tube portion 522 may include a cellulose acetate filter. Forexample, the tube portion 522 may include a tube-type structureincluding a hollow inside. The length of the tube portion 522 may be anappropriate length within a range of about 4 mm to about 30 mm, but isnot limited thereto. Preferably, the length of the tube portion 522 maybe 10 mm, but is not limited thereto. The diameter of the hollowincluded in the tube portion 522 may be an appropriate diameter within arange of about 2 mm to 4.5 mm, but is not limited thereto.

The hardness of the tube portion 522 may be controlled by adjusting thecontent of plasticizer when manufacturing the tube portion 522. Inaddition, the tube portion 522 may be manufactured by inserting astructure such as a film, tube, or the like of the same or differentmaterials into the inside of the tube portion 522 (for example, thehollow).

The tube portion 522 may be manufactured by using a cellulose acetatefilter. Accordingly, an internal material of the tobacco rod 510 may beprevented from being pushed back, and a cooling effect of an aerosol maybe generated.

Sucrose (or saccharose) may be included in the cooling portion 521 as acooling material. The melting point of sucrose is about 160° C. to about180° C. When the temperature of the sucrose reaches the melting point orhigher, caramelization performs, and in this operation, surrounding heatis absorbed.

The cooling portion 521 cools an aerosol generated by the heater heatingthe tobacco rod 510. Accordingly, a user may puff the aerosol which iscooled to a suitable temperature.

In detail, when the cigarette 5 is inserted into an aerosol generatingdevice, the aerosol generating device operates a heater to heat thetobacco rod 510 of the cigarette 5. When a user bites the acetateportion 523 of the cigarette 5 inserted into an aerosol generatingdevice and inhales air, air from the outside flows to the inside of thecigarette 5, and an aerosol is generated in an operation in which theintroduced air passes through the tobacco rod 510 heated by a heater.

As the aerosol generated in the tobacco rod 510 passes through thecooling portion 521, the temperature of sucrose, which is a coolingmaterial included in the cooling portion 521, rises. When thetemperature of the sucrose reaches the melting point or higher,caramelization may perform, and in this operation, surrounding heat maybe absorbed to cool the heated aerosol. Accordingly, a user may puff theaerosol which is cooled to a suitable temperature.

In addition, the sucrose included in the cooling portion 521 has acharacteristic of absorbing and not releasing surrounding moisture.Therefore, moisture absorbed by the sucrose may be added to the aerosolpassing through the cooling portion 521 to increase an amount ofaerosol, and the amount of aerosol may be maintained until the latterhalf of smoking.

In addition, when the sucrose is a sugar concentrate with highconcentration, the sucrose has high preservative properties due to highosmotic pressure, and thus storage stability may be ensured.

In an embodiment, the sucrose included in the cooling portion 521 mayhave a bead type, a sheet type, or a block type.

The bead-form sucrose may have a spherical shape or a fillet shape. Thesheet-form sucrose may include any one material of a porous paper or anedible film. The block-form sucrose may have a cylindrical shape, a tubeshape, or a nine-holed briquette shape.

The length or diameter of the cooling portion 521 may be variouslydetermined according to the shape of the cigarette 5. For example, thelength of the cooling portion 521 may be suitably used within a range ofabout 7 mm to about 20 mm. Preferably, the length of the cooling portion521 may be 14 mm, but is not limited thereto.

As shown in FIG. 5, as the cooling portion 521 is located in theupstream portion of the cigarette 5 than the tube portion 522 and theacetate portion 523, thereby preventing the tube portion 522 and theacetate portion 523 from being melted or contracted by heat.

FIG. 6 is an example diagram illustrating a bead-form cooling materialaccording to an embodiment.

Referring to FIG. 6, a cooling portion 600 may include a first filterelement 610, a second filter element 620, and a cooling material 630.

The first filter element 610 may be located at one side end portion ofthe cooling portion 600, and the second filter element 620 may belocated at the other side end portion. In addition, the first filterelement 610 and the second filter element 620 may be spaced apart by acertain distance to form a cavity between the first filter element 610and the second filter element 620. The cooling material 630 includingsucrose may be located in the cavity.

In an embodiment, the first filter element 610 and the second filterelement 620 may include a tube-type structure including a hollow inside,but the shape of the first filter element 610 and the second filterelement 620 are not limited thereto.

The cooling material 630 located in the cavity between the first filterelement 610 and the second filter element 620 may be a bead-form. Thebead-form cooling material 630 may have a spherical shape or a filletshape.

In an embodiment, the bead-form cooling material 630 may be manufacturedby stacking a sucrose layer on a sucrose seed by using a tangentialspray method or a top spray method. The bead-form cooling material 630manufactured in this method may have a spherical shape or a filletshape.

Also, the surface of the bead-form cooling material 630 may be coated. Afilm-forming polymer, gum, or starch may be used as a coating materialcoating the surface of the cooling material 630. For example, as thecoating material coating the surface of the cooling material 630,shellac, hyroxypropyl methylcellulose (HPMC), corn starch, or acombination thereof may be used. Preferably, the coating materialcoating the surface of the cooling material 630 may be shellac.Inserting the cooling material 630 into the cooling portion 600 maybecome easier and storage property of the cooling material 630 may beimproved by coating the surface of the cooling material 630.

In addition, fine protrusions may be formed on at least a portion of thesurface of the cooling material 630. By forming fine protrusions on thesurface of the cooling material 630, an area in which the coolingmaterial 630 contacts an aerosol passing through the cooling material630 may increase. As a result, a cooling effect of the cooling material630 may be improved.

In an embodiment, based on the total volume of the cooling portion 600,a ratio of the volume occupied by the bead-form cooling material 630 maybe about 30% to about 35%. Also, the diameter of the bead-form coolingmaterial 630 may be about 3 mm to about 5 mm, and the weight of thebead-form cooling material 630 may be about 0.3 g to about 1.0 g.

The first filter element 610, the second filter element 620, and thecooling material 630 included in the cooling portion 600 may be packagedvia at least one wrapper 640.

FIGS. 7A and 7B are example diagrams illustrating a sheet-form coolingmaterial according to an embodiment.

A cooling material 710 including sucrose may have a sheet form.

In an embodiment, the cooling material 710 may be a porous paper sheet.The porous paper sheet may be a material having elasticity andflexibility, and for example, may include a cellulosic material used inwrappers such as birch and bamboo.

When the cooling material 710 includes a porous paper sheet, a coatingmaterial including sucrose (for example, sucrose powder), distilledwater, and starch syrup may be coated on the porous paper sheet. Starchsyrup included in the coating material may control the viscosity of thecoating material and suppress the precipitation of sugar/glucosecrystals.

Materials included in the coating material are not limited to theabove-described examples, and additional materials may be further addedto increase the efficiency of coating operation and drying operation ofthe cooling material 710.

In an embodiment, the concentration of sucrose (for example, sucrosepowder) may be 30% wt to 70% wt relative to the total concentration ofthe coating material coated on a porous paper, and the total weight ofstarch syrup may be 40% or less relative to the total weight of thecoating material, but are not limited thereto.

In another embodiment, the cooling material 710 may be an edible film.

The edible film may include a biodegradable film material. For example,starch or cellulose and derivatives thereof, such as pectin, alginate,carrageenan, chitosan, or the like, may be used as the biodegradablefilm material. Also, pullulan having excellent coating and film formingability may be further added.

The cooling material 710 in an edible form may be formed by mixing theabove-stated biodegradable film material with sucrose.

In another embodiment, the cooling material 710 in a sheet form may havea viscosity such as wax. The cooling material 710 may include sucrose,an acid-based solution, and distilled water to have a viscosity such aswax. The acid-based solution may be lemon juice, vinegar, or the like.

Referring to FIG. 7A, the cooling material 710 in a sheet form may bewound. When a wound cooling material 720 is located inside a coolingportion 700, the wound cooling material 720 may be located inside thecooling portion 700 in a longitudinal direction of the cooling portion700 such that an airflow (for example, an aerosol) may pass through. Inother words, the wound cooling material 720 may be located inside thecooling portion 700 such that the longitudinal direction of the woundcooling material 720 is parallel to the longitudinal direction of thecooling portion 700.

In FIG. 7A, a plurality of wound cooling materials 720 may be located inthe cooling portion 700, such that a honeycomb-shaped airflow path maybe formed inside the cooling portion 700.

In addition, referring to FIG. 7B, the cooling material 710 in a sheetform may form various patterns and be located in the cooling portion 700such that an airflow may pass along the longitudinal direction of thecooling portion 700. For example, a cooling material 731 wound in anirregular pattern, a swirling cooling material 732, or a concentriccircle-form cooling material 733 may be located inside the coolingportion 700.

FIGS. 8A and 8B are example diagrams illustrating a block-form coolingmaterial according to an embodiment.

A cooling material including sucrose may have a block form. In anembodiment, a block-form cooling material may be manufactured in amethod in which syrup or powdered-form sucrose is poured into a mold toharden.

Referring to FIG. 8A, the block-form cooling material may have acircular shape, a tube shape including a hollow inside, or a nine-holedbriquette shape in which a plurality of holes penetrating the inside areformed. However, the block-form cooling material is not limited thereto.

Referring to FIG. 8B, at least one channel may be formed on an outercircumferential surface of the block-form cooling material. The at leastone channel formed on the outer circumferential surface of the coolingmaterial may be formed in the longitudinal direction of the coolingportion such that an airflow may pass along the longitudinal directionof the cooling material.

In an embodiment, the at least one channel formed on the outercircumferential surface of the cooling material may form a regular orirregular pattern of a straight line, a curved line, spiral or zigzag.Also, convex protrusions or concave grooves may be formed on the outercircumferential surface of the cooling material to perform a channelfunction allowing the airflow passing through.

FIG. 9 is a diagram explaining a cooling effect of using sucrose as acooling material according to an embodiment.

Referring to FIG. 9, each of cigarettes 910 to 970 may include a tobaccorod, a tube portion, a cooling portion, and an acetate portion.

While the tobacco rods of the cigarettes 910 to 970 are being heated,air is introduced from the outside to the inside of the cigarettes 910to 970 whenever a user bites the acetate portions of the cigarettes 910to 970 and puffs. An aerosol is produced in an operation in which theintroduced air passes through the heated tobacco rod.

Table 1 below is a result of measuring the temperature of aerosolsreaching an upstream end portion of the acetate portions after theaerosols generated from the tobacco rods have passed through the coolingportions, by using the cigarettes 910 to 970 according to first toseventh embodiments. In other words, through Table 1 below, how much theaerosols have cooled by passing through the cooling portions in each ofthe first to seventh embodiments may be confirmed.

For the measurement of Table 1, the puff volume was set to 55 ml, thepuff time was set to 2 seconds, the puff cycle was set to 20 seconds,and the number of puffs was set to 12. In Table 1, the maximumtemperature refers to an average value of maximum temperatures duringthe puff period for each puff, and the average temperature refers to anaverage value of average temperatures during the puff period for eachpuff.

TABLE 1 First Second Third Fourth Fifth Sixth Seventh DivisionEmbodiment Embodiment Embodiment Embodiment Embodiment EmbodimentEmbodiment Maximum 79.2 68.8 86.8 69.5 77.3 85.7 47.3 temperatureAverage 65.8 57.7 69.0 55.7 61.8 72.7 42.6 temperature

Hereinafter, the tube portions and the cooling portions of the first toseventh embodiments are tube-type structures including a hollow inside.

In the first embodiment, the tube portion of the cigarette 910 iscellulose acetate (CA), and the cooling portion is poly lactic acid(PLA) woven fabric. As a result measuring the temperatures of aerosolsat a measurement position by using the cigarette 910 of the firstembodiment, the maximum temperature was 79.2° C. and the averagetemperature was 65.8° C.

In the second embodiment, the tube portion of the cigarette 920 is CA,and the cooling portion is also CA. As a result measuring thetemperatures of aerosols at a measurement position by using thecigarette 920 of the second embodiment, the maximum temperature was68.8° C. and the average temperature was 57.7° C.

In the third embodiment, the tube portion of the cigarette 930 is areconsistuent tobacco sheet, and the cooling portion is CA. As a resultmeasuring the temperatures of aerosols at a measurement position byusing the cigarette 930 of the third embodiment, the maximum temperaturewas 86.8° C. and the average temperature was 69.0° C.

In the fourth embodiment, the tube portion of the cigarette 940 is apaper, and the cooling portion is CA. As a result measuring thetemperatures of aerosols at a measurement position by using thecigarette 940 of the fourth embodiment, the maximum temperature was69.5° C. and the average temperature was 55.7° C.

In the fifth embodiment, the tube portion of the cigarette 950 is a CA,and the cooling portion is a reconstituent tobacco sheet. As a resultmeasuring the temperatures of aerosols at a measurement position byusing the cigarette 950 of the fifth embodiment, the maximum temperaturewas 77.3° C. and the average temperature was 61.8° C.

In the sixth embodiment, the tube portion of the cigarette 960 is a CA,and the cooling portion is a paper. As a result measuring thetemperatures of aerosols at a measurement position by using thecigarette 960 of the sixth embodiment, the maximum temperature was 85.7°C. and the average temperature was 72.7° C.

In the seventh embodiment, the tube portion of the cigarette 970 is aCA, and the cooling portion is sucrose. As a result measuring thetemperatures of aerosols at a measurement position by using thecigarette 970 of the seventh embodiment, the maximum temperature was47.3° C. and the average temperature was 42.6° C.

In other words, as a result measuring temperatures of aerosols at ameasurement position by using the cigarettes 910 to 970 according to thefirst to seventh embodiments, the maximum temperature and the averagetemperature of the seventh embodiment in which the cooling material issucrose were measured to be the lowest.

When the temperature of sucrose included in the cooling portion reachesthe melting point or higher, caramelization may perform, and in thisoperation, surrounding heat may be absorbed to effectively cool theheated aerosol. Accordingly, a user may puff the aerosol cooled to asuitable temperature.

Those of ordinary skill in the art related to the present embodimentsmay understand that various changes in form and details can be madetherein without departing from the scope of the characteristicsdescribed above. The disclosed methods should be considered in adescriptive sense only and not for purposes of limitation. The scope ofthe present disclosure is defined by the appended claims rather than bythe foregoing description, and all differences within the scope ofequivalents thereof should be construed as being included in the presentdisclosure.

1. A cigarette comprising: a tobacco rod; and a filter rod connected toa downstream end portion of the tobacco rod; wherein a portion of thefilter rod comprises a cooling portion, and the cooling portioncomprises sucrose as a cooling material.
 2. The cigarette of claim 1,wherein the cooling portion comprises a first filter element at one sideend portion of the cooling portion and a second filter element at theother side end portion of the cooling portion, and the first filterelement and the second filter element are spaced apart by a certaindistance to form a cavity between the first filter element and thesecond filter element, and the cooling material is in the cavity.
 3. Thecigarette of claim 1, wherein the cooling material has a bead form. 4.The cigarette of claim 3, wherein a surface of the bead-form coolingmaterial is coated.
 5. The cigarette of claim 4, wherein fineprotrusions are formed on at least a portion of the surface of thecooling material.
 6. The cigarette of claim 1, wherein the coolingmaterial has a sheet form.
 7. The cigarette of claim 6, wherein thesheet-form cooling material is located in the cooling portion and woundsuch that an airflow passes through in a longitudinal direction of thecooling portion.
 8. The cigarette of claim 6, wherein the sheet-formcooling material comprises any one material of porous paper or ediblefilm.
 9. The cigarette of claim 1, wherein the cooling material is ablock form.
 10. The cigarette of claim 9, wherein the block-form coolingmaterial has any one shape of a cylindrical shape, a tube shape, or anine-holed briquette shape.
 11. The cigarette of claim 9, wherein atleast one channel through which an airflow passes through in alongitudinal direction of the cooling portion is formed in an outercircumferential surface of the block-form cooling material.
 12. Thecigarette of claim 11, wherein the at least one channel forms a regularpattern or an irregular pattern of a straight line, a curved line, aspiral, or a zigzag, and is formed on the outer circumferential surfaceof the cooling material.
 13. The cigarette of claim 1, wherein thefilter rod comprises a tube portion, a cooling portion, and an acetateportion, the tube portion is connected to a downstream end portion ofthe tobacco rod, the cooling portion is connected to a downstream endportion of the tube portion, and the acetate portion is connected to adownstream end portion of the cooling portion.
 14. The cigarette ofclaim 1, wherein the filter rod comprises a cooling portion, a tubeportion, and an acetate portion, the cooling portion is connected to adownstream end portion of the tobacco rod, the tube portion is connectedto a downstream end portion of the cooling portion, and the acetateportion is connected to a downstream end portion of the tube portion.